According to the complaint filed in U.S. District Court for the Northern District of California, Bal was an early investor in Oura, as well as serving as the company’s “primary marketing arm” in its early years as a cash-strapped start-up.

This is the first time the ring has had a serious discount since it was launched. All colourways are on offer, but please note that some are sold more, so their discounted prices are also different. The standard black colourway is the cheapest, with the Gold and Rose Gold colours currently selling for £420.